Rainbow-electronics DS1372 Bedienungsanleitung

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General Description
The DS1372 is a 32-bit binary up counter and 24-bit
down counter with a unique 64-bit ID. The counters, ID,
configuration, and status registers are accessed using
an I
2
C serial interface. The DS1372 includes a
SQW/INT open-drain output that can output either a
square wave at one of four predefined frequencies, or it
can output an active-low signal when the 24-bit down
counter reaches 0.
Applications
Portable Audio and Video Players
Features
Compliant with Microsoft Windows Media
®
DRM
10 for Portable Devices
32-Bit Binary Counter
Programmable Alarm
64-Bit Factory-Programmed ID
Interrupt Output
I
2
C Serial Interface
Two Selectable I
2
C Addresses
2.4V to 5.5V Operating Voltage Range
1.3V to 5.5V Timekeeping Operating Range
-40°C to +85°C Operating Temperature Range
8-Pin µSOP
DS1372
________________________________________________________________
Maxim Integrated Products
1
1
2
3
4
8
7
6
5
V
CC
SQW/INT
SCL
SDAGND
AD0
X2
X1
DS1372
μ
SOP
TOP VIEW
+
Pin Configuration
Ordering Information
SCL
SDA
SQW/INT
GND
R
PU
R
PU
= t
R
/ C
B
R
PU
CPU
V
CC
V
CC
X1 X2 V
CC
CRYSTAL
V
CC
DS1372
AD0
Typical Operating Circuit
Rev 0; 7/07
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
+
Denotes a lead-free package. This symbol also appears on the
top mark.
Windows Media is a registered trademark of Microsoft Corp.
PART TEMP RANGE PIN-PACKAGE
TOP
MARK
DS1372U+ -40°C to +85°C 8 μSOP 1372
I
2
C, 32-Bit, Binary Counter Clock with 64-Bit ID
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Inhaltsverzeichnis

Seite 1 - Maxim Integrated Products

General DescriptionThe DS1372 is a 32-bit binary up counter and 24-bitdown counter with a unique 64-bit ID. The counters, ID,configuration, and status

Seite 2 - ELECTRICAL CHARACTERISTICS

DS1372Accordingly, the following bus conditions have beendefined:Bus not busy: Both data and clock lines remainhigh.Start data transfer: A change in t

Seite 3 - CRYSTAL SPECIFICATIONS

2) Slave transmitter mode (DS1372 read mode): Thefirst byte is received and handled as in the slavereceiver mode. However, in this mode, the direction

Seite 4 - Pin Description

DS1372Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent license

Seite 5 - Real-Time Clocks (RTCs)

DS13722 _______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSRECOMMENDED DC ELECTRICAL CHARA

Seite 6 - Alarm Operation

DS1372_______________________________________________________________________________________ 3Note 1: Limits at -40°C are guaranteed by design and no

Seite 7 - Special Purpose Registers

DS13724 _______________________________________________________________________________________Pin DescriptionPIN NAME FUNCTION1, 2 X1, X2 Connection

Seite 8 - C Serial Data Bus

Detailed DescriptionThe DS1372 is a 32-bit binary counter designed to con-tinuously count time in seconds. An additional counteris provided that can g

Seite 9 - C Data Transfer Overview

DS1372Alarm OperationThe alarm counter is a 24-bit counter in the addressrange 04h–06h. When the alarm counter is written, aseed register is written w

Seite 10

Control Register (07h)Bit 7: Enable Oscillator (EOSC). When set to logic 0,the oscillator is started. When set to logic 1, the oscilla-tor is stopped.

Seite 11

DS1372Status Register (08h)Bit 7: Oscillator Stop Flag (OSF). A logic 1 in this bitindicates that the oscillator either is stopped or wasstopped for s

Seite 12 - Package Information

conditions. The DS1372 operates as a slave on the I2Cbus. Connections to the bus are made through the SCLinput and open-drain SDA I/O lines. Within th

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